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WO2018186791A1 - Détermination de ressource uci - Google Patents

Détermination de ressource uci Download PDF

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Publication number
WO2018186791A1
WO2018186791A1 PCT/SE2018/050349 SE2018050349W WO2018186791A1 WO 2018186791 A1 WO2018186791 A1 WO 2018186791A1 SE 2018050349 W SE2018050349 W SE 2018050349W WO 2018186791 A1 WO2018186791 A1 WO 2018186791A1
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WO
WIPO (PCT)
Prior art keywords
feedback
node
control channel
resources
control information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2018/050349
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English (en)
Inventor
Robert Baldemair
Stefan Parkvall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to EP18717751.4A priority Critical patent/EP3607683B1/fr
Priority to US15/778,271 priority patent/US11102762B2/en
Priority to CN201880035262.8A priority patent/CN110679103B/zh
Priority to CN202211086617.0A priority patent/CN115473608A/zh
Publication of WO2018186791A1 publication Critical patent/WO2018186791A1/fr
Anticipated expiration legal-status Critical
Priority to US17/380,678 priority patent/US20210352658A1/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI

Definitions

  • the present disclosure relates to physical layer control signaling of a wireless device operating within wireless communications networks, including transmission of Channel Quality Information (CQI) and Hybrid Automatic Repeat Requests (HARQs) feedback.
  • CQI Channel Quality Information
  • HARQs Hybrid Automatic Repeat Requests
  • LTE Long Term Evolution
  • periodic CQI periodic CQI feedback
  • aperiodic CQI feedback also referred to as “aperiodic CQI.”
  • the transmitting node In aperiodic CQI, the transmitting node explicitly requests a transmission of CQI feedback.
  • the triggering may happen via a triggering bit in a Downlink Control
  • DCI Downlink Information
  • Periodic CQI is semi-statically configured and occurs at periodic instances. Together with the time pattern, a periodic resource is configured that should be used for the periodic CQI reporting.
  • LTE uses a HARQ protocol where the receiver informs the transmitter about success (ACK) / no success (NACK) of the corresponding transmission.
  • the resources for ACK/NACK transmission are typically signaled as a combination of dynamic signaling (in the DCI message) and semi-statically configured parameters.
  • LTE uses one HARQ ACK/NACK feedback bit per transport block.
  • feedback of two Multiple Input Multiple Output (MIMO) transport blocks can be bundled (e.g., using a logical AND operation) into a single value.
  • MIMO Multiple Input Multiple Output
  • CA Carrier Aggregation
  • TDD Time Division Duplex
  • HARQ feedback of multiple downlink slots must be conveyed in fewer uplink slots.
  • NR New Radio
  • a user equipment If a user equipment (UE) has data to transmit in the uplink but no scheduled uplink data, it can transmit a Scheduling Request (SR) on a small dedicated resource requesting uplink data resources.
  • Physical Uplink Control Channel (PUCCH) is the channel used for Uplink Control Information (UCI), which includes ACK/NACK, CQI, and SR.
  • UCI Uplink Control Information
  • PUSCH resources to send the report on are available as part of the granted resources.
  • PUCCH resources are provisioned as part of the CQI reporting configuration. Also, PUCCH resources for SR are semi-statically configured.
  • PUCCH resources for ACK/NACK (AN) in LTE are either assigned implicitly or explicitly.
  • the PUCCH resource upon which ACK/NACK feedback is transmitted is derived from the time-frequency position in which the scheduling PDCCH has been transmitted.
  • a UE is semi-statically configured with multiple PUCCH resources and an ACK/NACK Resource Indicator (ARI) sent in a downlink grant selects one of the configured resources, for use in reporting HARQ feedback for at least the data corresponding to the downlink grant.
  • ARI ACK/NACK Resource Indicator
  • aperiodic CQI is only transmitted if Physical Uplink Shared Channel (PUSCH) resources are scheduled. If aperiodic CQI should be transmitted together with
  • PUCCH Format 2a 2b For one or two HARQ feedback bits, the CQI can either be dropped or transmitted together with the HARQ feedback on CQI resources. For larger ACK/NACK feedback sizes, the CQI is dropped since neither the ACK/NACK resources nor the CQI resources are sufficient to accommodate both feedback types and ACK/NACK feedback is transmitted on ACK/NACK resources.
  • the combined payload is transmitted using PUCCH Format 3. If the combined payload size exceeds 22 bits, spatial bundling is applied to the ACK/NACK bits. If the combined payload size of spatially bundled ACK/NACK, CSI, and SR is less than or equal to 22 bits, spatially bundled ACK/NACK, CSI, and SR is transmitted using PUCCH Format 3; otherwise CSI is dropped and ACK/NACK together with SR is transmitted using PUCCH Format 3.
  • PUCCH Format 4 and 5 use similar procedures as PUCCH Format 3.
  • ACK/NACK feedback reporting and other UCI collide
  • the UE could simultaneously transmit both over PUCCH. This, however, is not optimal since a combined report could be more efficient.
  • intermodulation products can occur requiring power back-off of the UE and thus reducing coverage.
  • Embodiments disclosed herein involve explicit PUCCH resource allocation, where a UE is configured with multiple PUCCH resources and an ACK/NACK Resource Indicator (ARI) selects one of the configured resources.
  • a UE is configured, per each of several ARI code-points, with multiple differently-sized PUCCH resources.
  • the ARI thus indicates which set of resources to be used - the ARI is considered together with the combined UCI payload to determine exactly which PUCCH resource.
  • Such embodiments provide better support for combined UCI transmissions, which leads to less dropping of certain UCI types (for example, dropping CQI in favor of ACK/NACK) or better link performance of combined UCI transmissions, since larger PUCCH resource can be used.
  • a method of operating a node, such as a feedback transmitting node, to report CQI feedback and HARQ feedback includes receiving control information indicating resources in which data is to be received by the node.
  • the control information includes an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the method also includes determining a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback, and selecting, from a plurality of control channel resources in the
  • the method further includes transmitting CQI feedback and HARQ feedback in the selected control channel resource.
  • a method of operating a node, such as a feedback- receiving node, to receive CQI feedback and HARQ feedback includes transmitting control information indicating resources in which data is to be received by another node.
  • the control information includes an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the method also includes receiving CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI.
  • the control channel resource is selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • a node configured to report CQI feedback and HARQ feedback includes at least one processor and a memory.
  • the memory includes instructions executable by the at least one processor whereby the node is operable to receive control information indicating resources in which data is to be received by the node, the control information comprising an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the node is also operable to determine a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback and select, from a plurality of control channel resources in the predetermined set of control channel resources indicated by the value of the ARI, one of the control channel resources of the predetermined set, based on the feedback payload size parameter.
  • the node is also operable to transmit CQI feedback and HARQ feedback in the selected control channel resource.
  • a node configured to receive CQI feedback and HARQ feedback includes at least one processor and a memory.
  • the memory includes instructions executable by the at least one processor whereby the node is operable to transmit control information indicating resources in which data is to be received by another node.
  • the control information includes an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the node is also operable to receive CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • FIG. 1 may include functional implementations, computer program products, and non-transitory computer readable media that store instructions that, when executed by processing circuit, perform the operations of the embodiments described above.
  • Figure 1 illustrates resource pool selection as may be implemented in an embodiment.
  • Figure 2 is a block diagram illustrating a wireless device, according to some embodiments.
  • Figure 3 is a flowchart illustrating a method by a feedback-transmitting node, according to some embodiments.
  • Figure 4 is a flowchart illustrating a method by a feedback-receiving node, according to some embodiments.
  • Figure 5 is a block diagram illustrating a network node, according to some embodiments.
  • Figure 6 is an example functional implementation in a wireless device, according to some embodiments.
  • Figure 7 is an example functional implementation in a wireless device or network node, according to some embodiments.
  • One possible approach is to configure a UE with multiple differently-sized periodic CQI resources, such that the UE can choose the appropriate resource based on a combined UCI payload size.
  • this solution requires transmission of the combined report on the CQI resource, which is not always desired. If an aperiodic CQI resource is triggered in a downlink grant and no uplink resources for the CQI report are scheduled at the same time, it must be decided on which resources the CQI report will be sent. If the CQI report collides with an ACK/NACK transmission, the combined report could be sent on the ACK/NACK resource. However, the combined UCI payload may exceed the available ACK/NACK resource. The same applies if the aperiodic CQI report is triggered by an uplink grant and PUSCH resources would be available, but the UE is configured with simultaneous transmission of PUSCH and PUCCH and should use ACK/NACK PUCCH resources.
  • the techniques described herein address these issues by providing for explicit PUCCH resource allocation where a UE is configured with multiple PUCCH resources and an ACK/NACK Resource Indicator (ARI) selects one of the configured resources.
  • ARI ACK/NACK Resource Indicator
  • a UE is configured with multiple differently-sized PUCCH resources per each of several ARI code-points.
  • the multiple differently-sized PUCCH resources associated with a given ARI value are generally referred to as a "set” or “pool” - thus, the UE is configured with multiple sets or pools of PUCCH resources, each corresponding to an ARI value.
  • Such embodiments provide better support for combined UCI transmissions, which leads to less dropping of certain UCI types (for example, dropping CQI in favor of ACK/NACK) or better link performance of combined UCI transmissions, since larger PUCCH resources can be used in a more flexible way.
  • a feedback-transmitting node such as a UE, is configured with predetermined sets of control channel resources.
  • the predetermined sets may be control channel resource pools, and the control channel resources in each control channel resource pool may be PUCCH resources.
  • At least one resource pool contains multiple PUCCH resources that have at least two different sizes.
  • An ARI indicates the PUCCH resource pool to select from among the multiple PUCCH resource pools.
  • One of the multiple PUCCH resources in this PUCCH resource pool is selected as a function of the combined UCI payload to report. It should be noted that the order in which the ARI and UCI payload size are considered makes no difference.
  • the UCI payload size might be considered first, for example, to identify a PUCCH resource from each of several PUCCH resource pools - the UCI payload size thus corresponds to a predetermined group of PUCCH resources that cuts across the "resource pools" as discussed above. Then, the ARI can be used to identify which of the specific PUCCH resources in that group that should be used.
  • the term “combined resources”, or alternatively, “combined transmission resources” refers to the collection of time/frequency resources used to transmit a set of signals or channels. A combination of resources need not be contiguous in time or frequency with each other. Where each of the separate signals or channels occupies its own distinct set of transmission resources, the term “combined resources” refers to the collection that includes all of the distinct sets. In some cases, multiple separate signals or channels may be mathematically or otherwise combined and transmitted using the resources usually used for only some of (or even just one of) the separate signals.
  • Figure 1 shows an example of how the ARI, which is typically received in control information indicating resources in which data is to be received by the node, e.g., in downlink control information (DCI) sent via a Physical Downlink Control Channel (PDCCH), is used to select PUCCH resource pool 2, which includes PUCCH resource 0 and PUCCH resource 1 . Selection of PUCCH resource 0 or PUCCH resource 1 within the PUCCH resource pool 2 is based on a function of the combined UCI payload.
  • DCI downlink control information
  • PUCCH resource pool 2 which includes PUCCH resource 0 and PUCCH resource 1 .
  • weights are also possible to set one or more of the weights equal to zero, if the corresponding information field should not influence the PUCCH resource selection.
  • Feedback information other than ACK/NAK, CQI, and SR could easily be added in the calculation along the same lines as above.
  • N AN is the number of ACK/NACK bits the UE has to report, relating to the numbers of downlink assignments the UE has received.
  • N AN is a function of the number of downlink assignments N DL for which a given report is meant to apply.
  • the DCI scheduling of a downlink transmission may also influence if and how many bits should be reported for a received assignment.
  • the UE misses some downlink assignments (or incorrectly decodes some of them), it would calculate a wrong N AN , which could result in the UE selecting a different PUCCH resource (since it calculates a different Njot than g/eNB does) than g/eNB, which knows the number of actual scheduled downlink assignments.
  • N AN could thus be replaced, in some embodiments, by a nominal number that does not necessarily reflect the number of actual received DL assignments, i.e. , in the above equations, N ⁇ m would be used instead of N AN .
  • N ⁇ m would be used instead of N AN .
  • some possibilities are used that can be used to inform the UE about the nominal number
  • a UE reports ACK/NACK in slot n, it could be configured with a reporting time window length N win , i.e., it should report ACK/NACK for downlink assignments received in slots n - N win to n - 1.
  • the window can either count slots (i.e., uplink and downlink slots, but of course, it would not receive downlink
  • the g/eNB knows for which slots to expect a true ACK/NACK feedback and for which it expects a filler NACK (for those slots it did not schedule) and can use this information in decoding.
  • a UE is configured with carrier aggregation, multi-bit feedback per transport block (code-block (group) based feedback), MIMO, or bundling of some slots into a single ACK/NACK bit this needs to be considered when determining the size of the bitmap. For example, if a UE is configured with carrier aggregation of three component carriers which should report ACK/NACK on this PUCCH and a MIMO scheme requiring two feedback bits per slot the bitmap would have a size of 3 x 2 x N win . For carrier aggregation, it can either be the number of configured carriers or the number of activated carriers. The size of the bitmap would correspond to N A fi m .
  • a UE is configured with a number of HARQ processes and how many bits it should report per HARQ process.
  • This may correspond to multi-bit feedback per transport block, i.e., code-block (group) -based feedback, for example.
  • the bitmap size could be determined based on the number of configured HARQ processes and bits per HARQ process that should be reported using this PUCCH. Also, here the MIMO scheme needs to be considered. The size of the bitmap would correspond to N ⁇ m .
  • a UE is semi-statically configured with N ⁇ m .
  • the number N ⁇ m is included in at least one DCI that schedules a downlink assignment that should be acknowledged in this PUCCH.
  • this information is included in more than one DCI since if the UE misses the DCI containing this information, it does not know N ⁇ m .
  • N ⁇ m can be directly provided as a number or as an index into a configured or hard coded table.
  • the configured table could , for example, correspond to the payload sizes of the individual resources of the, via ARI, selected PUCCH resource pool.
  • the number N ⁇ m could be the payload size of the smallest PUCCH resource in the selected PUCCH resource pool.
  • the g/eNB knows how many bits are needed to report feedback for all scheduled downlink assignments (UE may miss a downlink assignment, but it is very unlikely it wrongly detects a DCI not addressed to it).
  • the g/eNB would thus select and signal with ARI , a PUCCH resource pool that is the smallest resource capable to at least feed back the ACK/NACK bits.
  • the smallest resource pool does not need to match the number of ACK/NACK bits exactly, it can also be larger.
  • N ⁇ m is provided as part of the PUCCH resource pool configuration.
  • the UE receives ARI and selects the corresponding PUCCH resource pool and also the N ⁇ m value valid for this PUCCH resource pool.
  • FIG. 2 illustrates a block diagram of a wireless device 50 in a wireless communication system (e.g., a cellular communications system) in which embodiments of the present disclosure may be implemented.
  • the wireless device 50 may be a UE.
  • the term "UE” is used herein in its broad sense to mean any wireless device. As such, the terms “wireless device” and “UE” may be used interchangeably herein.
  • the wireless device 50 may additionally represent a target device, a D2D UE, a machine type UE, or a UE capable of Machine-to-Machine (M2M) communication, a sensor equipped with a UE, an iPAD, a tablet, a mobile terminal, a smart phone, Laptop Embedded Equipped (LEE), Laptop Mounted Equipment (LME), Universal Serial Bus (USB) dongles, Customer Premises Equipment (CPE), an loT (Internet of Things) capable device, or any other device capable of communicating with a 5G and/or NR network, etc.
  • M2M Machine-to-Machine
  • the wireless device 50 includes processing circuitry 52 comprising one or more processors 62 (e.g., Central Processing Units (CPUs),
  • processors 62 e.g., Central Processing Units (CPUs)
  • CPUs Central Processing Units
  • the wireless device 50 also includes transceiver circuitry 56, including one or more transmitters or receivers coupled to one or more antennas 54.
  • transceiver circuitry 56 including one or more transmitters or receivers coupled to one or more antennas 54.
  • the functionality of the wireless device 50 described above may be fully or partially implemented in software (e.g., computer programs 66) that is stored in the memory 64 and executed by the processor(s) 62.
  • a carrier containing the computer program products described herein is provided.
  • the carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory).
  • a computer program including instructions which, when executed by at least one processor, causes the at least one processor of the wireless device 50 to carry out the functionality of a feedback-transmitting node in communication with a feedback-receiving node, such as an access point of the wireless communication system.
  • the wireless device 50 is operable to report CQI feedback and HARQ feedback.
  • the wireless device 50 is then operable to receive control information indicating resources in which data is to be received by the node, the control information comprising an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the ARI value may indicate one of PUCCH resource pools 0 to 3.
  • the wireless device 50 is also operable to determine a feedback payload size
  • the wireless device 50 is then operable to transmit CQI feedback and HARQ feedback in the selected control channel resource. It will be appreciated that these operations can be considered in a different order than described above, with exactly the same results.
  • the UCI size determines which of four groups of PUCCH resources the PUCCH resource to be used is to be selected from, such as the group consisting of those PUCCH resources labeled "PUCCH resource 0" in each of PUCCH resource pools 0 to 3. Then, the ARI received in the downlink control information identifies which of those four PUCCH resources is to be used.
  • the wireless device 50 may be configured to perform the method 300 shown in Figure 3.
  • the method 300 includes receiving control information indicating resources in which data is to be received by the node, the control information comprising an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback (block 302).
  • the term "set" refers to one or several resources, which may be of different sizes, that are associated with a given ARI value - in Figure 1 , for example, each of the PUCCH resource pools 0 to 3 could be considered a "set.” It will be appreciated, of course, that the technique illustrated in Figure 3 does not depend on the use of that specific terminology.
  • the method 300 also includes determining a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback (block 304).
  • the method 300 further includes selecting, from a plurality of control channel resources in the predetermined set of control channel resources indicated by the value of the ARI, one of the control channel resources of the predetermined set, based on the feedback payload size parameter (block 306).
  • the method 300 then includes transmitting CQI feedback and HARQ feedback in the selected control channel resource (block 308).
  • control information indicating resources in which data is to be received by the node is downlink control information received from an access point of a wireless network
  • the predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback are uplink control channel resources.
  • control information indicating resources in which data is to be received by the node is downlink control information received from another node engaged in device-to-device communications with the node.
  • the HARQ feedback may be for at least data received in the resources indicated in the control information.
  • the feedback payload size parameter may be determined further based on whether a scheduling request bit is to be sent in the selected control channel resource.
  • the feedback payload size parameter may be computed as a weighted sum of at least a number of CQI feedback bits and a number of HARQ feedback bits, with a weight applied to the number of CQI feedback bits differing from a weight applied to the number of HARQ feedback bits.
  • the feedback payload size parameter may also be computed based on a number of HARQ feedback bits that is in turn based on a predetermined nominal number of HARQ feedback bits.
  • the predetermined nominal number of HARQ feedback bits may be determined based on a configured reporting time window length or semi-statically configured via control signaling received by the node.
  • the predetermined nominal number of HARQ feedback bits may be received in the control information indicating resources in which data is to be received by the node.
  • a computer program including instructions which, when executed by at least one processor of the wireless device 50, causes the at least one processor of the wireless device 50 to carry out the functionality of a feedback-receiving node, such as when it is engaged in Device-to-Device (D2D) communication with another node, such as the other D2D device.
  • the wireless device 50 is operable to transmit control information indicating resources in which data is to be received by the wireless device 50.
  • the control information includes an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the wireless device 50 is also operable to receive CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI.
  • the specific control channel resource to be used within that set is selected, i.e., determined, based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • the wireless device 50 may be configured to perform a corresponding method 400 for receiving CQI and HARQ feedback.
  • the method 400 includes transmitting control information indicating resources in which data is to be received by another node (e.g., other D2D device), the control information comprising an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback (block 402).
  • the method 400 also includes receiving CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback (block 404).
  • the wireless device 50 is engaged in device-to-device communications with the other node, and the control information indicating resources in which data is to be received by the other node is downlink control information transmitted to the other node.
  • the HARQ feedback may be for at least data received in the resources indicated in the control information.
  • FIG. 5 is a block diagram illustrating an access point of the wireless communication system, such as network node 30.
  • the network node 30 may be a radio access node, Transmission and Reception Point (TRP), base station or other general radio node allowing communication within a radio network.
  • Network node 30 may also represent, for example, a base transceiver station, a base station controller, a network controller, an enhanced or evolved Node B (eNB), a Node B, a gNB (access point supporting NR or 5G), Multi-cell/Multicast Coordination Entity (MCE), a relay node, an access point, a radio access point, or a Remote Radio Unit (RRU) Remote Radio Head (RRH).
  • eNB enhanced or evolved Node B
  • MCE Multi-cell/Multicast Coordination Entity
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • the network node 30 provides wireless access to other nodes such as wireless device 50 or other access nodes within a coverage area (e.g., cell) of the network node 30.
  • the network node 30 described here in configured to operate in a NR network, but may be applicable to other networks or standards that utilize the techniques discussed herein.
  • the network node 30 includes processing circuitry 32 comprising one or more processors 42 (e.g., CPUs, ASICs, FPGAs, and/or the like) and a memory 44 that stores computer programs 46 and, optionally, configuration data 48.
  • the network node 30 may include communication interface circuitry 38 to communicate with the core network or other network nodes.
  • the network node 30 also includes transceiver circuitry 36, which may include one or more transmitters and receivers coupled to one or more antennas 34, for communication with wireless devices, such as wireless device 50.
  • the functionality of the network node 30 described herein may be fully or partially implemented in software that is, for example, stored in the memory 44 and executed by the processor(s) 42.
  • the memory 44 of the network node 30 stores instructions that when executed by one or more of the processors 42 configures the network node 30 to operate as a feedback-receiving node that receives CQI and HARQ feedback.
  • the network node 30 is operable to transmit control information indicating resources in which data is to be received by another node (e.g., wireless device or access node).
  • the control information includes an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the network node 30 is also operable to receive CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI.
  • the control channel resource is selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • the network node 30 is also operable to perform the method 400, but from the viewpoint of an access node.
  • FIG. 6 is a schematic block diagram of a node (e.g., the wireless device 50) according to some other embodiments of the present disclosure.
  • the node includes one or more modules, each of which is implemented in software.
  • the module(s) provide the functionality of the node and include a receiving module 602 for receiving control information indicating resources in which data is to be received by the node, the control information comprising an ARI having a value indicating one of a plurality of
  • the implementation also includes a determining module 604 for determining a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • the implementation includes a selecting module 606 for selecting, from a plurality of control channel resources in the predetermined set of control channel resources indicated by the value of the ARI, one of the control channel resources of the predetermined set, based on the feedback payload size parameter.
  • the implementation further includes a transmitting module 608 for transmitting CQI feedback and HARQ feedback in the selected control channel resource.
  • FIG. 7 is a schematic block diagram of a node (e.g., D2D wireless device 50 or network node 30) according to some other embodiments of the present disclosure.
  • the node includes one or more modules, each of which is implemented in software.
  • the module(s) provide the functionality of the node and includes a transmitting module 702 for transmitting control information indicating resources in which data is to be received by another node, the control information comprising an ARI having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback.
  • the implementation also includes a receiving module 704 for receiving CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • a method of operating a node to report channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback comprising:
  • control information indicating resources in which data is to be received by the node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback;
  • ARI ACK/NACK resource indicator
  • determining a feedback payload size parameter based on a number of bits to be reported for CQI feedback and for HARQ feedback
  • control information indicating resources in which data is to be received by the node is downlink control information received from an access point of a wireless network, and wherein the predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback are uplink control channel resources.
  • control information indicating resources in which data is to be received by the node is downlink control information received from another node engaged in device-to-device communications with the node.
  • the feedback payload size parameter is computed as a weighted sum of at least a number of CQI feedback bits and a number of HARQ feedback bits, with a weight applied to the number of CQI feedback bits differing from a weight applied to the number of HARQ feedback bits.
  • a method of operating a node to receive channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback comprising: transmitting control information indicating resources in which data is to be received by another node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback; and
  • CQI channel quality indicator
  • HARQ hybrid automatic-repeat-request
  • a node adapted to operate according to the method of any of embodiments A-N.
  • a node configured to report channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback, the node comprising:
  • a memory comprising instructions executable by the at least one processor whereby the node is operable to:
  • control information comprising an
  • ACK/NACK resource indicator having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback;
  • a feedback payload size parameter based on a number of bits to be reported for CQI feedback and for HARQ feedback
  • control information indicating resources in which data is to be received by the node is downlink control information received from an access point of a wireless network, and wherein the predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback are uplink control channel resources.
  • control information indicating resources in which data is to be received by the node is downlink control information received from another node engaged in device-to-device communications with the node.
  • T The node of any of embodiments P-S, wherein the feedback payload size parameter is determined further based on whether a scheduling request bit is to be sent in the selected control channel resource.
  • the feedback payload size parameter is computed as a weighted sum of at least a number of CQI feedback bits and a number of HARQ feedback bits, with a weight applied to the number of CQI feedback bits differing from a weight applied to the number of HARQ feedback bits.
  • V The node of any of embodiments P-T, wherein the feedback payload size parameter is computed based on a number of HARQ feedback bits that is in turn based on a predetermined nominal number of HARQ feedback bits.
  • W The node of embodiment V, wherein the predetermined nominal number of HARQ feedback bits is determined based on a configured reporting time window length.
  • a node configured to receive channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback, the node comprising:
  • a memory comprising instructions executable by the at least one processor whereby the node is operable to:
  • control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback; and receive CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • ARI ACK/NACK resource indicator
  • AA The node of embodiment Z, wherein the node is an access point of a wireless network, wherein the control information indicating resources in which data is to be received by the other node is downlink control information transmitted by the access point to the other node, and wherein the predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback are uplink control channel resources.
  • CC The node of any of embodiments Z-BB, wherein the HARQ feedback is for at least data received in the resources indicated in the control information.
  • DD A computer program product comprising program instructions for a processor in a node, wherein said program instructions are configured so as to cause the node, when the program instructions are executed by the processor, to:
  • control information indicating resources in which data is to be received by the node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback; determine a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback;
  • ARI ACK/NACK resource indicator
  • a computer program product comprising program instructions for a processor in a node, wherein said program instructions are configured so as to cause the node, when the program instructions are executed by the processor, to:
  • control information indicating resources in which data is to be received by another node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting channel quality indicator (CQI) feedback and hybrid automatic-repeat-request (HARQ) feedback; and receive CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.
  • ARI ACK/NACK resource indicator
  • HARQ hybrid automatic-repeat-request
  • a receiving module for receiving control information indicating resources in which data is to be received by the node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback;
  • ARI ACK/NACK resource indicator
  • a determining module for determining a feedback payload size parameter, based on a number of bits to be reported for CQI feedback and for HARQ feedback;
  • a selecting module for selecting, from a plurality of control channel resources in the predetermined set of control channel resources indicated by the value of the ARI, one of the control channel resources of the predetermined set, based on the feedback payload size parameter;
  • a transmitting module for transmitting CQI feedback and HARQ feedback in the selected control channel resource.
  • a transmitting module for transmitting control information indicating resources in which data is to be received by another node, the control information comprising an ACK/NACK resource indicator (ARI) having a value indicating one of a plurality of predetermined sets of control channel resources for transmitting CQI feedback and HARQ feedback; and
  • ARI ACK/NACK resource indicator
  • a receiving module for receiving CQI feedback and HARQ in a control channel resource of a plurality of control channel resources in the predetermined set indicated by the value of the ARI, the control channel resource selected based on a number of bits to be reported for CQI feedback and for HARQ feedback.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un aspect, l'invention concerne un nœud de transmission de rétroaction CSI/HARQ qui reçoit des informations de commande indiquant des ressources dans lesquelles des données doivent être reçues par le nœud. Les informations de commande comprennent un indicateur de ressource ACK/NACK (ARI) comportant une valeur indiquant un parmi une pluralité d'ensembles prédéterminés de ressources de canal de commande pour transmettre une rétroaction CQI et une rétroaction HARQ. Le nœud détermine un paramètre de taille de charge utile de rétroaction, sur la base d'un nombre de bits à signaler pour une rétroaction de CQI et pour une rétroaction HARQ, et sélectionne, parmi une pluralité de ressources de canal de commande dans l'ensemble prédéterminé de ressources de canal de commande indiquées par la valeur de l'ARI, l'une des ressources de canal de commande de l'ensemble prédéterminé, sur la base du paramètre de taille de charge utile de rétroaction. Le nœud transmet une rétroaction CQI et une rétroaction HARQ dans la ressource de canal de commande sélectionnée.
PCT/SE2018/050349 2017-04-03 2018-04-03 Détermination de ressource uci Ceased WO2018186791A1 (fr)

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EP18717751.4A EP3607683B1 (fr) 2017-04-03 2018-04-03 Détermination de ressource uci
US15/778,271 US11102762B2 (en) 2017-04-03 2018-04-03 UCI resource determination
CN201880035262.8A CN110679103B (zh) 2017-04-03 2018-04-03 Uci资源确定
CN202211086617.0A CN115473608A (zh) 2017-04-03 2018-04-03 Uci资源确定
US17/380,678 US20210352658A1 (en) 2017-04-03 2021-07-20 UCI Resource Determination

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EP3607683B1 (fr) 2024-07-10
CN110679103A (zh) 2020-01-10
US20210352658A1 (en) 2021-11-11
CN115473608A (zh) 2022-12-13
US20200084761A1 (en) 2020-03-12
CN110679103B (zh) 2022-09-06

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